Every month in a normal menstrual cycle, the ovaries prepare for the release of an egg or ova. At the same time, the lining of your uterus thickens with blood and tissue to prepare for a possible pregnancy. If male sperm are not united with the ova around the time of ovulation, the lining of the uterus is shed and you have your menstrual period. Between the time of ovulation and the time of your menstrual period, you will have about 10-14 days of what is called the luteal phase (pronounced loo-tee-al). During this time, the follicle or house that the ova was in before it was released (the corpus luteum) continues to produce luteinizing hormone. When this hormone drops off, you have your period.
You may even notice that mid-way through your cycle you experience a slight twinging pain to the right or the left of your abdomen. If you do, what you are experiencing is the actual moment of ovulation, which is pretty cool!
No
No.
Delayed menstrual cycles have been reported when taking Ciprofloxacin. The delay can also be caused by the urinary tract infection. Both can cause delayed menstrual cycles.
because it just does.
Once a month
No. Humans are the only mammals with menstrual cycles. Deer, as well as other mammals, have estrous cycles. http://en.wikipedia.org/wiki/Estrous_cycle
The average menstrual cycles lasts 28 days - but different women may experience different menstrual cycle lengths, and cycles can change throughout a woman's life.
No, men do not have menstrual cycles. Menstrual cycles are unique to people with female reproductive systems and involve the shedding of the uterine lining if pregnancy does not occur. Men do not have the necessary anatomy for this process.
28 days
because of stuff in them and yeah
The average weight of a 13 year old girl starting her menstrual cycle can vary depending upon the individual. Menstrual cycles are known to cause temporary weight gain until the end of the cycle.
Then she would put a pad on and continue with her day.